That means Barr is one of the top one percent of most intelligent people in the world.

Her score, a staggering 162, surprised Barr herself: "When I found out I got such a high score, it was so unexpected. I was shocked," she tells Harlow Star.

Barr attends Burnt Mill Academy in Harlow, Essex, United Kingdom. But prior to that, "Nicole was a pupil at Epping Upland Primary School [where] she was several years ahead of her peers, tackling complex algebra before the age of 10."

Now, she qualifies to join Mensa, the high IQ society that accepts only those "who have attained a score within the upper two percent of the general population on an approved intelligence test that has been properly administered and supervised," according to their website.

"She's a hard, hard-working child. She stays after school for homework club and never misses a day..."

"...From a young age she's been picking out mistakes in books and magazines. She's a happy, fun-loving girl who is always asking for extra homework," Barr's mother, Dolly Buckland, says on Mirror.co.uk. She also adds that Barr plans on going to college and university to pursue a career in pediatrics.